Fluttershy: I'm so sorry I lost track of time at our picnic. I didn't mean for us to get caught out here after dark. But there's really nothing to be afraid of. The forest at night is the same as the forest during the day.

Apple Bloom: What's all this, Applejack? I thought you were gonna help me get ready for the Filly Guide Cookie Drive.

Applejack: Uh, yeah, sorry about that. But Rainbow Dash has been on a prankin' tear, and you can never be too careful.

Apple Bloom: Do you really think Dash is gonna try and prank you in your sleep?

Applejack: Not if I have anythin' to say about it.

[click]

Applejack: See ya in the mornin', sugarcube.

[pig oinks]

Applejack: Huh?!

[rooster crows]

Applejack: Whoa!

[splut]

[pan clanks]

Rainbow Dash: Ha! Still think I'm lazy? Gotcha! [laughing] Pigpen...

Applejack: [grunts] Ugh! Rainbow Dash!

[splat]

[pig oinking]

[polka music]

[skunk sprays]

Rainbow Dash: [laughs] Gotcha!

[music continues]

Spike: [blows fire]

[thunk]

Spike: [blows fire]

[thunk]

Spike: [blows fire]

[thunk]

Spike: [blows fire]

[thunk]

Spike: [blows fire]

[thunk]

[loud thud]

[sloop]

Rainbow Dash: Gotcha!

[clang!]

Rainbow Dash: Gotcha!

[students laughing]

Rainbow Dash: Gotcha!

Twilight Sparkle: Pinkie! We need your help.

Pinkie Pie: Okay! For what?

Rarity: Are you honestly going to stand there and tell us you know nothing about all the pranking Rainbow Dash has been doing?

Pinkie Pie: Oh, no! She's been pranking up a storm!

Fluttershy: Did she get you, too?

Pinkie Pie: [laughs] Oh, yeah! She and Gummy both!

Rainbow Dash: Boo!

Pinkie Pie: Aaah! [giggling]

Pinkie Pie: They got me good.

Applejack: Well, she needs to stop.

Pinkie Pie: Stop? But pranks are so much fun!

Twilight Sparkle: Not for everypony. And it doesn't seem like Dash is taking the time to find out who enjoys them and who doesn't.

All but Twilight: [grumble]

Rarity: Uh, since you and Dash share such an, uh, affinity for pranking, we thought you might be able to get her to, um, uh... quit it!

Pinkie Pie: Hey, Rainbow Dash! I have something very important to tell you!

Rainbow Dash: Pinkie, hey! I actually have something totally important to tell you!

Pinkie Pie: You do? Ooh! You go first!

Rainbow Dash: Okay, you know how I've been pranking everypony?

Pinkie Pie: Yeah! [giggles] It's been pretty funny! I-I-I mean, actually, that's what I have to talk to you about.

Rainbow Dash: Here. Have a cookie.

Pinkie Pie: Ooh! Thanks! [chomps]

Rainbow Dash: So, I got to thinking – why waste my time pranking everypony one at a time when I could prank everypony at once?

Pinkie Pie: Mmm, wow! Everypony at once?! That sounds amazing!

[record needle scratches]

Pinkie Pie: Gah, wait! I mean, it's not.

Rainbow Dash: You don't even know what it is yet! Pinkie, this is gonna be the best prank ever! I special ordered these joke cookies so the colors would match my mane.

Pinkie Pie: And?

Rainbow Dash: And I'm gonna switch them with the Filly Guide cookies. When Scootaloo and her friends sell them, everypony in town's gonna get a rainbow mouth courtesy of Rainbow Dash! Ha-ha! It's gonna be so awesome!

Pinkie Pie: Uh, I don't know. I mean, it doesn't really seem all that funny.

Rainbow Dash: [gasps] What?!

Pinkie Pie: Maybe this is a good time to stop pranking for a while. The other ponies in town really—

Rainbow Dash: Stop?! No way! This prank is happening, Pinkie! And it's gonna be hilarious!

Pinkie Pie: [chomps]

Rainbow Dash: Pinkie, what's the deal? I told you I needed your help switching out all the Filly Guide cookies for the joke cookies. But when you didn't show, I had to do it all by myself! Uh, Pinkie?

Pinkie Pie: [coughs]

Rainbow Dash: [chuckles] Wow. Your face is still pretty rainbowed.

Pinkie Pie: Yeah, I haven't really [coughs] been feeling well. And these joke cookies are the only thing that makes me feel better. You don't have any more, do you?!

Rainbow Dash: Uh, no. I just told you, I used them all for the prank.

Pinkie Pie: Oh.

Rainbow Dash: Pretty soon, the CMCs will start selling them to everypony in town. Ponies will open their boxes and start eating, then all of their teeth will turn rainbow-colored, and they'll know it was me! It's gonna be so awesome! C'mon, you don't wanna miss it!

Rainbow Dash: What is going on...? Okay. Definite cookie-eating happening. But... where is everypony? They must have seen their rainbow mouths by now... They should all be running out into the streets! Unless everypony went to bed early...

Rainbow Dash: Pinkie?

[crunch]

Rainbow Dash: The whole town got the cookies, and now everypony is shut up in their houses! You don't think there's something wrong with the joke cookies, do you?

[clatter]

[clatter]

Rainbow Dash: Mrs. Cake! Phew! Have you seen Pinkie? I was thinking I might have something to do with her not feeling great.

Rainbow Dash: [pant] Twilight! [pant] You gotta come with me to Sugarcube Corner! Something's going on with the Cakes! Well, not something exactly. I mean, it may have something to do with these joke cookies...

[beat]

Twilight Sparkle: [droning] Cooooooookies...

Spike: [groans]

Rainbow Dash: Oh, no!

Twilight Sparkle: [droning] Coooooookies...

Spike: [groans]

Rainbow Dash: [whimpers] Fluttershy—

Fluttershy: [droning] Cooooooookies...

Harry: [low growl]

[door opens, slams]

Rainbow Dash: [panting]

Granny Smith: [groans] [droning] Cooooooookiiiiiiieeeeeeees...

[crunch]

Granny Smith: [droning] Cookies...

Applejack: You sure you don't mind us all comin' over?

Rarity: Oh, of course not. I think the girls have earned a little celebration for all of their hard work. And I have plenty of sewing machine cake left over. Unless anypony wants a cookie...?

Rainbow Dash: Don't touch those!

Rarity: Oh! There is certainly no call for that! There's plenty for everypony.

Rainbow Dash: Come on! We gotta get outta here!

Applejack: What in tarnation are you goin' on about?

Rainbow Dash: There's no time! You have to follow me!

Rarity: Oh, Rainbow Dash, if you want all of those cookies, you will have to buy them, just like everypony else.

Rainbow Dash: I don't want the cookies—!

[ponies groaning]

Rainbow Dash: But they do!

Rarity: Wh-wh-what... What's happening?

Rainbow Dash: I'll explain later. Come on!

Rainbow Dash: [panting]

Sweetie Belle: We need to find somewhere to hide!

Granny Smith: Cookie! Cookie!

Applejack: This way!

[ponies groaning]

[bucking]

Rainbow Dash: [spits, pants] Did we lose them?

Scootaloo: [pants] Why are we running from the ponies of Ponyville?

Sweetie Belle: What happened to all of our friends?

Rainbow Dash: [sighs] I think it's something in the cookies.

Applejack: Ugh! That's ridiculous! Filly Guide cookies haven't changed for years! It's not like there's a new ingredient that's turnin' the whole town into cookie-cravin' zombies.

Rainbow Dash: [pants] Okay! So I may have switched all the Filly Guide cookies for joke cookies that were supposed to make ponies' mouths rainbow but somehow turned everypony into mindless cookie-eating zombies instead! I figure we just hide out here until the effects wear off, and as long as nopony else eats the cookies, we'll be fine.